Noncorroding antifreeze composition



I Patented May 3, 1927.

. UNITED STATES I 1,626,998 PATENT OFFICE.

e nomr a. wear, or armor, noa'rn nnxo'rm xonoonnonme mum oourosrrron.

Hebrew g.

My invention relates in general, to materials for lowering the freezlng'point of liquids; The invention more particularly re latesto compositions having a low freezing point, yet I and other etrimental action uponmaterial in contact therewith.

The invention further relates to non-cor roding, anti-freeze compositlons or'mlxtures,

which are Simple, easy and cheap to make, efiicient in operation and effective in results, and which are convenient and economical in handling and use, by reason of being the form of comparatively dry substances,

adapted to be subsequently mixed with water esired.

These features of my invention make it a plicable for various urposes and especial y useful in heating an refrigerating systems and in the radiators of internal combustion arious other objects and advantages of the invention will be obvious from the following particular description of embodiments 0 my invention. The various features of novelty, which characterize. my invention are pointed out with particularity in-the claims annexed to andforming a part of thisspecification, but for a better under standing of the invention, however, its adtherewith. By expe covered that, if the metal or rubber parts are ,"covered with an oily 'su vantages and specific objects attained with its use,-reference should be had-to the accom- Hanying descriptive matter inwhich I have escribed the. best forms of my invention. Heretofore, there have been so-called antifreeze mixtures in which calcium or sodium chloride has been used and a chromate has been added to stabilize the.chloride and to; some-extent lessenthe corrosive properties or' tendencies of the chloride. I;Iowever, itv has .been discovered that the chromate doesnot do. awa with the corrosive action.

The ro lem which confronted me and which solved wasto obtaina composition I :j'avhich would have a low freezing point and t ncgfermitcorrosive, electrolytic or other 'arm action upon material in contact rimentation 'I have disee, corrosion and other harmful efle'cts. are eliminated. The

,problem was how to secure a proper idifiua sion or dispersion of oil over these metal oryrnbberlparta; 1

tion. although olive oil or th n f i greventing corrosion, electrolysis,

Application fled owner as, 1920. Serial m. was T be used- I have found that the introduction of potassium'bicarbonate will result in disperslng the oil over these metal and rubber parts and molasses, gum acacia or gum tragacanth act aseflicient agents for promotmg the emulsification and dispersion'of the o1 a sion and other harmful action and by means invention an ideal anti-freeze, non-' corroding mixture is obtained.

For use in old .radiatorsthat may-leak due to the solvent action of the solution on crys tallized salts. that may be presentbecauset of the use of bad water or otherwise, there may be introduced a small quantity of commercial ginger or other similar substaneeto stop or counteract the leak.

The invention will be more fully described in the followin specific exam les which are illustrative of ifierent m cations of the invention. It is understood, however,' that the invention is not limited to the s" 'ecific amples undaof Emple v I If i I About twen (20- anhydrous caliiumeh iride are mixed with steps or embodiments set forth in e exabout four 4) bi'chro-' mate. To t mixture 1s? added'abo'ut -pne' (1) quartof mineral oil preferably hav'mg low and point. As

of'a. pound-[of "Mum-bicarbonate are emulsi and p ,1 afinta-about dne (1-) quart of moan "a ut oneeeighth added.-

ve fsubaances which are:

be. formed into'ja' 00 mixed 'togetheri The resulting preparation may; mix'ed' 'with about five- '(5) gallons of-water with or without" tatiom'making about hve (fi):gnllon sof ur ehloridejs a nn I 7 up may be in any other form, and instead of calcium chloride, sodium chloride or other suitable chloride or other equivalent freezing-point depressant may be employed, the quantity used being dependent upon the material employed. 7

Also, instead of potassium biehromate, any other suitable chromate or bichromate may be used.

Instead of molasses, a small quantity of any other sugar solution may be used.

Also, instead of mineral oil, there may be substituted olive oil or any latty animal or vegetable oil, but 1 consider the mineral oil as decidedly preferable.

lnstead ot the potassium bicarbonate, any other bicarbonate or not more than atrace of gum acacia or gum tragmcanth may be substituted therefor.

In some cases, a small quantity of commercial ginger may be used to advantage for stopping radiator leaks in old radiators.

Example 2.

About four (4) pounds of commercial anhydrous calcium chloride are mixed with about one-half ounce ot'potassium bicarbonate and about one (1) ounce of potassium bichromate. To this mixture is added about one-fourth 4) pound of mineral oil. This is then mixed with about nine (9) pounds of water, with or without agitation, makin about one (1) gallon of solution.

Pre erably commercial anhydrous calcium chloride is used, but the calcium chloride may be in any other form, and instead of calcium chloride, sodium chloride or other suitable chloride or other equivalent freezing point depressant may be employed, the quantity used being dependent upon the material employed.

Also, instead. of potassium bicarbonate, there may be substituted any other suitable bicarbonate or not more than a'trace of gum acacia or gum trag-acanth.

Instead of mineral oil, there may be substituted olive oil' or any fatty animal or vegetable oil, but I consider the mineral oil as decidedly preferable.

Also, in place of potassium bichromate, any other suitable bichromate may be used.

In some cases, a small quantity of com mercial ginger may be used to advantage for stopping leaks in old radiators.

By means of the embodiments of my invention above set forth, there is attained not only greater convenience and. better results in the mixing of the component parts, but also when the oil is emulsified and dispersed by the molasses, bicarbonate gum acacia, gum tragacan'th or other emulsifying and dispersingagents, a thin film of oil is dispersed over and clings toevery portion of the metal and rubber parts of the radiator and engine with which the composition comes in contact, and thus protects these metal and rubber parts against any corrod ing tendency remaining after the stabilization of the calcium chloride by the introduction of the chromate or potassium bichromate.

According to my invention, the material of my composition may be prepared as a relatively dry substance, using the different; ingredients in the proper proportions, so that all that remains to be done is to mix it with the proper amount of water to, form a mm-corroding, anti-freeze composition for use in heating or refrigerating systems or in the radiators of internal combustion engines or for various other purposes for which it is applicable.

\Vith my invention, a simple, cheap and etlicient anti-freezc composition is provided and its relatively dry form permits not only of greater ease in handling and use but also of considerable saving by reason of its reduced bulk and the consequent reduced shipping and storage charges, not possible with other compositions which have the Water added initially and prior to sale and shipment of the composition.

While I have described and have pointed out in the claims, annexed hereto, certain novel features of the invention, it will be understood that various omissions, substitutions and changes in the embodiments of the invention described may be made by those skilled in the art without departing from the spirit of the invention.

Having thus described my invention, what 1 claim as new and desire to secure by Letters Patents, is:

1. A composition comprising an aqueous mixture of calcium chloride, potassium bichromate, mineral oil, molasses and potassium bicarbonate.

2. An anti-freeze composition non-corrosive to metal comprising an aqueous medium having a freezing temperature depressant chloride, an alkali metal bichromate, a sugar solution, an oil having low viscosity and high boiling point and an alkali bicarbonate.

3. An anti-freeze mixture comprising about twenty (20) pounds of commercial anhydrous calcium chloride, about four (4) ounces of potassium bichromate, about one (1)"quart of mineral oil, about one (1) quart of molasses, about one-eighth pound of potassium bicarbonate and about five (5) gallons of Water.

4. A composition comprising an aqueous mixture of calcium chloride, potassium bicarbonate, mineral oil and potassium bichromateu 5 An anti-freeze composition non-corrosive to metal. comprising an aqueous medium having a freezing temperature depressant chloride, an alkali metal bicarbonate, mineral oil and an alkali metal bichromate.

, 6. An anti-freeze mixture, comprising about four (4) pounds of commercial anhydrous calcium chloride, about one-half ounce of potassium bicarbonate, about one-fourth A) pound of mineral oil, abou one (1) ounce of potassium bichromate and about'nine (9) pounds of Water.

7. A composition in the form of ,a comparatively dry substance adapted to be subsequently mixed with water, comprising calcium chloride. potassium bichromate, mineral oil, molasses and potassium bicarbonate. 8. A composition in the form of a comparatively dry substance adapted to be subsequently mixed with water, com rising a freezing temperature depressant ch oride, an alkali metal blClll'OIlltttBytt sugar solution,

an oil having low viscosity and high boiling point and an alkali metalbicarbonate.

9. A composition in the form of a comparatively dry substance adapted to be subsequently mixed [with water, comprising about twenty (20) pounds of commercial anhydrous calcium chloride, about four- (4) ounces of potassium bichromate, about one (1) quart of mineral oil, about one (1) quart of molasses, and about one-eighth pound of potassium bicarbonate.

10. A composition comprising an aqueous mixture of calcium chloride, potassium bichromate, mineral oil, molasses, potassium bicarbonate and ginger.

11. An anti-free composition non-corrosive to metal comprising an aqueous mixture having a freezing temperature depressant, chloride. mineral oil, an alkali metal bichromatc and gum tragacanth.

12. An anti-freeze mixture comprising about four (4) pounds of commercial anhydrous calcium chloride, about one-half ounce of potassium bicarbonate, about one-fourth 4) pound of mineral oil, about one (1) ounce of potassium bichromate, about nine (9) pounds of water and not more than a trace of gum tragacanth.

13. A compositimi comprising an aqueous mixture of calcium chloride, potassium bibicarbonate and gunr tragacanth. 14. An anti-freeze composition non-corrosive to metal comprising an aqueous medium having a freezing temperature depressant chloride, mineral oil, an alkali metal bicarbonate and gum tragacanthj ROBERT S. WRIGHT.

-chromate, mineral oil, molasses, potassium 

